bisecting fixing commit since 2b79150141611d3c6e1b55d4e70f49602482f0b8 building syzkaller on cba33199be220cbf61f7c0c8223d88a25a913d6f testing commit 2b79150141611d3c6e1b55d4e70f49602482f0b8 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 5863b8b357017161c0ee4fcd1e479c23144710b45c8be0c43c27e2ea3e131fcf run #0: crashed: WARNING in __rate_control_send_low run #1: crashed: WARNING in __rate_control_send_low run #2: crashed: WARNING in __rate_control_send_low run #3: crashed: WARNING in __rate_control_send_low run #4: crashed: WARNING in __rate_control_send_low run #5: crashed: WARNING in __rate_control_send_low run #6: crashed: WARNING in __rate_control_send_low run #7: crashed: WARNING in __rate_control_send_low run #8: crashed: WARNING in __rate_control_send_low run #9: crashed: WARNING in __rate_control_send_low run #10: crashed: WARNING in __rate_control_send_low run #11: crashed: WARNING in __rate_control_send_low run #12: crashed: WARNING in __rate_control_send_low run #13: crashed: WARNING in __rate_control_send_low run #14: crashed: WARNING in __rate_control_send_low run #15: crashed: WARNING in __rate_control_send_low run #16: crashed: WARNING in __rate_control_send_low run #17: crashed: WARNING in corrupted run #18: crashed: WARNING in __rate_control_send_low run #19: crashed: WARNING in __rate_control_send_low testing current HEAD f96eb53cbd76415edfba99c2cfa88567a885a428 testing commit f96eb53cbd76415edfba99c2cfa88567a885a428 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 7fd8abb366eace2b3ff09fc130492a49f9329251b4a0a999ffb957d0d2b4a36f all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 22m9.177894239s (build: 15m13.692013732s, test: 6m29.493000747s) the crash still happens on HEAD commit msg: Linux 4.14.246 crash: unregister_netdevice: waiting for DEV to become free Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout